Vishnu Schist and granitic intrusions

Vishnu Schist and granitic intrusions (1650 my).
State Utah
Name Vishnu Schist and granitic intrusions
Geologic age Precambrian
Lithologic constituents
Major
Metamorphic > Schist > Amphibole-schist (Amphibolite)schist and gneiss, amphibolite to granulite
Minor
Igneous > Plutonic (Pluton, Dike or sill)
Comments from Grand Canyon area
References

Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000.

Hawkins, D.P., Bowring, S.A., Ilg, B.R., Karlstrom, K.E., and Williams, M.L., 1996, U-Pb geochronologic constraints on the Paleoproterozoic crustal evolution of the Upper Granite Gorge, Grand Canyon, Arizona: Geological Society of America Bulletin, v. 108, no. 9, p. 1167-1181.

NGMDB product
Counties Washington